CeMnNi4: A soft ferromagnet with a high degree of transport spin polarization
Surjeet Singh, Goutam Sheet, Pratap Raychaudhuri, Sudesh Kumar Dhar
TL;DR
This paper introduces CeMnNi4, a new soft ferromagnetic material with high spin polarization and potential for spintronic applications, characterized by its magnetic properties and transport spin polarization measurements.
Contribution
It reports the synthesis and characterization of CeMnNi4, demonstrating its high spin polarization and soft ferromagnetic behavior for the first time.
Findings
High spin polarization of 66% measured
Soft ferromagnetic with low coercivity
Ferromagnetic transition at 148K
Abstract
In this letter we introduce a new soft ferromagnetic compound, i.e. CeMnNi4, which exhibits a large moment (~4.95mu_B/Mn) and high degree of spin polarization. The system has a ferromagnetic transition temperature of 148K. Isothermal magnetization measurements at 5K reveal that the material is a soft ferromagnet with a magnetization saturating at about 500Oe and a coercive field of < 5 Oe. We determine the transport spin polarization of this material from Point Contact Andreev Reflection measurements to be 66% thereby making this material potentially important for spintronic applications.
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